1 Natural selection of favorable adaptations in organisms often results in A. the inheritance of acquired traits. B. the elimination of favorable traits. C. an increase in genetic mutations. D. the evolution of a species.

Gram-negative bacteria have a cell wall that is! and does not accept the stain, making itappear

Which of th following is needed for cellular respiration to occur

Which of the following must be true for a fossil organism to be useful as an index fossil? a. the fossil organism must be widespread geographically. b. the fossil organism must be abundant. c. the fossil organism must be limited to a short span of geologic time. d. all of the above.